Ad Hoc M2M communications and security based on 4G cellular system

In this paper, we introduce an M2M(machine-to-machine) communications model based on 4G cellular system which is capable to establish Ad Hoc networks wherever the terminals are close enough. The M2M terminal structure is proposed accordingly. In Ad Hoc mode, the security issue becomes more critical. We consider a simplified protocol stack while introducing key components to provide secure communication between M2M and the network and also among M2M terminals.